scholarly journals Single-particle excitation spectra ofC60molecules and monolayers

2007 ◽  
Vol 75 (7) ◽  
Author(s):  
Fei Lin ◽  
Erik S. Sørensen ◽  
Catherine Kallin ◽  
A. John Berlinsky
2021 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Hiroyuki Tajima ◽  
Pierbiagio Pieri ◽  
Andrea Perali

We investigate single-particle excitation properties in the normal state of a two-band superconductor or superfluid throughout the Bardeen–Cooper–Schrieffer (BCS) to Bose–Einstein-condensation (BEC) crossover, within the many-body T-matrix approximation for multichannel pairing fluctuations. We address the single-particle density of states and the spectral functions consisting of two contributions associated with a weakly interacting deep band and a strongly interacting shallow band, relevant for iron-based multiband superconductors and multicomponent fermionic superfluids. We show how the pseudogap state in the shallow band is hidden by the deep band contribution throughout the two-band BCS-BEC crossover. Our results could explain the missing pseudogap in recent scanning tunneling microscopy experiments in FeSe superconductors.


2007 ◽  
Vol 463-465 ◽  
pp. 44-47 ◽  
Author(s):  
Y.X. Xiao ◽  
T. Sato ◽  
K. Terashima ◽  
H. Matsui ◽  
T. Takahashi ◽  
...  

1992 ◽  
Vol 46 (14) ◽  
pp. 9063-9069 ◽  
Author(s):  
A. L. Fetter ◽  
C. B. Hanna

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